Ok, I'm gonna comment this sentence by sentence:
"First, update 1 universe or update 100 universe don't have particular different cost, only different time to update software."
- I don't know what is your profession and what you do so no offense, but this is completely incorrect and is one of most often/basic mistakes done in resource/people management - this "only different time to update software" is potentially huge cost difference. Let's say (for argument sake) it takes 1 developer 1 hour to update 1 uni (could be more could be less, depends on necessary actions) - updating 8 unis would be 1 day - updating 80 unis would be 10 days, so instead of 1 day, updating takes 2 weeks - first this person is "wasting" a lot of company's money/time resource wise, second this person can't be used on some other projects/tasks so company is suffering on that side as well. That is double waste of resources/costs. This is to say if everything goes smoothly - one of the biggest issues in IT are human errors and updating 8 unis opens 8 potential problems, updating 80 opens 80 potential problems which again potentially increases time/costs of updates.
"Second, same version, same bugs ........ so if find that new version has 4 bug, i have to correct one code about 4 bug, not 100 code with 4 bugs"
-This is partially correct - yes you have to correct one code for 4 bugs, but someone has to apply that fix to all unis and we come back to everything mentioned above. Fixing issue is usually the smallest part of costs, testing code, approving it, going through QA/QC and releasing it is usually much more costly and takes more times and more people are involved in the process.
"Third, if i update version in universe, for a time (short, long, none) this will have an effect in players of that universe ......... maybe someone come back to play, maybe someone find new interest in play, maybe someone spend money to have advantage from new version, ecc. And any universe is a microtown ....... so any update can have different effect."
- Not sure what this has to do with anything since version update in current discussion that i stated would happen in all cases - with merge, without merge, before merge of after merge.
"Fourth, you descrive merge as an happy situation for every players, but you lose to think that any merge create 2 different players ...... who is happy about new situation and who is sad about new situation. If you have more happy that sad, is a good point, but if for exaple 90% of sad were also 70% of bigger shoppers will be a terrible effect"
- I wouldn't say this statement is correct. I never described merge as happy/unhappy situation for every player. I never talked about anyone's opinion except my own. My own opinion is that merge needs to happen and I do believe (but I don't guarantee and never have) from the talks with rest of the players in that uni that they all want merge to happen. Also, merge, or as I talked mostly about "technical" aspect of it, migration is something that usually in business is something that must happen. Human nature is such that that event is usually unhappy - people use one system for years, get used to it and when they have to learn, adapt to new situation they are frustrated. But, in most studies both from finance/performance and human satisfaction point of view this always changes after short period of time (when people start understanding new situation better and they become more comfortable) and in most cases it is win:win situation for all parties involved.
"Fifth, better to do before merge and then update, or before update, left play and then after ome months merge ? Hard to know the future. Sure about tecnical part nothing change ........ about money, maybe change. You same said that maybe arrive update, i choose a class and then with merge i will be forced to change class ........ so if i'm forced to change class, i have to spend money, so GF will be not sad. In the other hand, you could do that arrive update and you don't choose class waiting days for merge."
- I'm not sure I completely understand what you meant here, but I think you are partially agreeing with me and if I understood correctly I partially agree with you here. The only thing you might be wrong here, and from previous experience with ogame and community here is this - "so if i'm forced to change class, i have to spend money, so GF will be not sad." - From what I have been reading on forum and talking with people in previous years I would say most people would quit ogame in this case instead of spending money, so GF will be sad (but again this just my opinion, this is not a fact).
"The only sure thing is that from external, anyone is a bussines expert , but only GF know if universe X has a decrease of incoming, increase, equal ........ only gf know kind of players in any universe and could predict (I think with a big margin of error) what will be effect in players target."
- I just have a short comment here. I never stated I know better than GF, but yes I am business expert on this matter, this is my profession.. And I would not compare myself to "anyone/everyone from external" because I believe I have more insight into this than other people here so I would not say that is a sure thing.. Just because some company makes a specific decision, it doesn't mean that decision is correct/good. Also to have insight into data you mentioned here, usually robust reporting system or BI is required and I am not sure GF would invest that kind of money into ogame (again, this is not a fact, just my opinion based on what was/is happening with ogame in last years compared how it was before)