Markus,
Regarding (1) Yes, the committers usually have rights to push or merge unlike contributors, but they are more like the same type of participant at Apache Foundation (there "committer" and "member" are actually two separate roles)Regarding (2) that would effectively mean that every committer member has one vote in these committees, so if we are 1.000 committer members, we have 1.000 votes?
No, that will certainly not be the case for any of the Jakarta EE WG committees ;-)
All Eclipse committer members have a vote for e.g. the Board elections, ask EMO how many members there are if they can share it, but in the WG at most an even balance between companies and committer representatives looks like something doable.
That would be quite positive also compared to e.g. the JCP where the EC has 19 corporate members including Oracle, one Open Source Organization (Eclipse), 2 JUGs and 2 Individuals.
The Eclipse Board of Directors:
https://www.eclipse.org/org/foundation/directors.phphas 3 Committer representatives who are elected every year (I think I must have run in that category once) and 3 Sustaining member representatives. Please ask someone else what exactly makes up this group, it might be both Associate and Solution Members, but not quite sure.
Either way there is a certain balance and if most or all committees in the Jakarta EE WG had at least a similar number of elected committer representatives, it would be better than just one.