Not sure Briz are quite in the same bracket as Sarries yet, but they are certainly attracting a lot of big names who will command big £££. The same accusation could have been leveled at Wasps a couple of seasons back where we had retained homegrown players such as Launchbury, Jones, Daly, Wade and Simpson; signed top players from other Prem clubs such as Taylor, Gaskell and Robson; tempted Cips and Hask back from their travels and also added big global names like Beale, Smith, Piutau and WLR.
The proof will be in the coming seasons when the current, fairly recently assembled squad all come asking for more. Wasps failed to keep that 2016/17 squad together, and in part that was due to the need to stay within the cap (many other factors at play too, I know). Briz will face similar challenges. If they manage to keep the squad together whilst continuing to add big name signings with little in the way of significant exits then questions will begin to be asked.