1. No currently the XP gain from fights is based on the equipment value in each team, which atm is very low and rather pointless
2. No you cant transfer the gold from strategus to cRPG but some clans may be willing to buy strategus gold off your character for cRPG gold
3. Working as an independant player it takes alot longer to field and form of army. If you go above 50 troops you begin to pay upkeep for them so its best to take to crafting and trading to make gold before you recruit any soldiers
4. Strategus can be highly enjoyible, but it has a very slow pace, we're a month in and only now are the largest factions beginning to capture their first villages. We're talking about 50+ people working together and only now being capable of holding lands. As an independant force you will have to devout a long time to the game, but really it only takes 10 - 15 minutes a day to get your character doing what you need.